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Standard Deviation
1. A measure of the dispersion of a set of data from its mean. The more spread apart the data, the higher the deviation. Standard deviation is calculated as the square root of variance. 2. In finance, standard deviation is applied to the annual rate... More »
How to Calculate Standard Deviation
Determining the standard deviation is important in mathematics in order to measure accuracy. Calculate the standard deviation with tips from a teacher in this free video on math and science.... More »
Difficulty: Moderate
Source: www.ehow.com

en.wikipedia.org/wiki/Standard_deviation

In statistics, the standard deviation is a measure that is used to quantify the amount of variation or dispersion of a set of data values. A low standard deviation  ...

www.mathsisfun.com/data/standard-deviation.html

The Standard Deviation is a measure of how spread out numbers are. Its symbol is σ (the greek letter sigma). The formula is easy: it is the square root of the ...

www.khanacademy.org/math/statistics-probability/displaying-describing-data/sample-standard-deviation/v/statistics-standard-deviation

Learn how to calculate standard deviation, how it relates to variance and mean, and the difference between population and sample standard deviation.

www.robertniles.com/stats/stdev.shtml

A simpler explanation of standard deviation, written by a former math-major- turned-journalist who likes to explain math to people don't understand or just plain ...

www.investopedia.com/terms/s/standarddeviation.asp

Standard deviation is a measure of the dispersion of a set of data from its mean. It is calculated as the square root of variance by determining the variation ...

www.calculator.net/standard-deviation-calculator.html

Free online tool to calculate the standard deviation, variance, mean, sum, and confidence range for given numbers. Also find hundreds of other free online ...

mathworld.wolfram.com/StandardDeviation.html

Physical scientists often use the term root-mean-square as a synonym for standard deviation when they refer to the square root of the mean squared deviation of ...

www.statisticshowto.com/what-is-standard-deviation

Nov 10, 2012 ... Standard deviation explained in plain English. How to find it by hand or using technology. Standard deviation symbol. Free help forum.